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/*****************************************************************************
* Copyright (c) 2014 CEA LIST.
*
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* CEA LIST - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.moka.dummyexample;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.papyrus.moka.debug.MokaThread;
import org.eclipse.uml2.uml.NamedElement;
/**
* A simple visitor class, that simply displays the name of the model elements it visits.
* The visited elements are those contained in the executionRoot element, given as a parameter of the constructor.
*
*/
public class DummyVisitor {
/**
* The list of all the elements to be visited
*/
protected List<NamedElement> elementsToVisit ;
/**
* The currently visited element
*/
protected NamedElement currentlyVisited ;
/**
* The IThread associated with this visitor.
*/
protected MokaThread thread ;
/**
* Constructor
*
* @param executionRoot The root execution element, from which elementsToVisit is determined (eAllContents)
* @param thread The thread to be associated with this visitor
*/
public DummyVisitor(NamedElement executionRoot, MokaThread thread) {
this.thread = thread ;
this.elementsToVisit = new ArrayList<NamedElement>() ;
Iterator<EObject> i = executionRoot.eAllContents() ;
for ( ; i.hasNext() ; ) {
EObject o = i.next() ;
if (o instanceof NamedElement) {
elementsToVisit.add((NamedElement)o) ;
}
}
}
/**
* The visitor behavior.
* It consists in iterating over elementsToVisit, and display the name of the visited elements.
* After each visit, inside of the iteration, the control is delegated to a ControlDelegate object,
* in order to determine if execution can go on, or shall be suspended, or shall be terminated,
* or if some animation shall happen.
*/
public void visit() {
try {
boolean _continue = true ;
for (Iterator<NamedElement> i = elementsToVisit.iterator() ; i.hasNext() && _continue ; ) {
currentlyVisited = i.next() ;
DummyUMLExecutionEngine.eInstance.getOutputStream().write("I am visiting " + currentlyVisited.getName() + "\n") ;
// if _continue becomes false (which means that the execution shall terminate), the loop will exit
_continue = DummyUMLExecutionEngine.eInstance.getControlDelegate().control(this) ;
}
} catch (IOException e) {
Activator.log.error(e);
}
}
}
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